PML AAM 12.0 For Ram Differential Cover

Description

Volume: about 0.6 quarts over stock

Dimensions: Click here for dimensions.

Number of Bolts: 14

2019 and newer Ram 2500 and Ram 3500 trucks may have this new American Axle Manufacturing (AAM) 14 bolt differential. The ring gear may be 12 or 11.8 or 11.5 inches.

PML designed this differential cover based on the stock cover from a 2019 Ram 2500. 2018 and older trucks have a similar looking differential cover but the shapes and bolt hole patterns are slightly different.

Check your factory fluid change procedure before ordering. The level check hole on the PML cover is about 3/8 inch diameter. If you need a large level check hole, for example a hole you can stick your finger in, you would need to use a tool or this cover may not work for you.

Benefits:

Drain and magnetic drain plug included
Heavy duty, sand cast aluminum
Finned for heat dissipation
Works with brake line bracket, no modification needed
Clears sway and pan hard bars on trucks with coil suspension
Extra capacity

Applications

We have seen this new differential on:

2019 and newer Ram 2500 and 3500

Always check your truck to verify your differential and clearance. Configurations vary. We do not know if all trucks or just some are getting these newer differentials.

Gasket: customers have told us that Mopar Part Number 68454491AA is the gasket for this differential. If your truck has a difference gasket part number, please contact us.

Front Differential Cover: for information on a matching front cover, see PML Part Number 11136.

2018 and older trucks:

2018 and older trucks with a sway bar, such as 2014 to 2018 Ram 2500, see PML Part Number 11147
2018 and older Ram 3500 and 2013 and older Ram 2500 trucks with the AAM 11.5 or 11.8, see PML Part Number 10361

Installations

2021 Ram 3500 Diesel

Jeff installed this differential cover and PML front cover, PML Part Number 11136, on his 2021 Ram 3500 6.7 Diesel, Single Rear Wheel, truck.

2021 Ram 3500 PML front differential cover installed PML rear differential cover installed

Close up of clip at 3 oclock position Close up of bracket at 11 oclock position Click on image to view larger in a new tab or window.

2019 Ram 2500 Diesel

Craig installed this differential cover on a 2019 Ram 2500 diesel with stock pan hard and sway bars. He used the stock bolt for the clip on the right side after removing the bolt flange. He unbolted the track and sway bars for the installation and added about 4 3/4 quarts of fluid total.

Stock rear differential cover Bolts PML cover installed No clearance issue with panhard and sway bars
Click on image to view larger in a new tab or window.

2019 Ram 2500 Diesel Hellwig Sway Bar

This part was successfully installed on a 2019 Ram 2500 Diesel Truck with coil suspension and a Hellwig sway bar.

Our thanks to Dave for working with us. Pictures from his installation are below:

2019 Ram 2500 stock differential cover Draining fluid from 2019 Ram 2500 differential PML differential cover installed
Click on image to view larger in a new tab or window.

2019 Ram 2500 6.4 Hemi

Marco installed this PML cover on his 2019 Ram 2500 6.4 gas engine truck. He used Royal Purple 75w140 and reused original gasket.

2019 Ram 2500 6.4L Hemi stock cover PML cover installed, clears pan hard and sway bars PML cover installed
Click on image to view larger in a new tab or window.

2019 Ram 3500 Diesel

Don installed PML front and rear differential covers on his 2019 Ram 3500 4x4 SRW with the 6.7 Diesel. Installation was straight forward and he did it in his driveway.

2019 Ram 3500 4x4 Stock front and rear differential covers PML front differential cover installed
Side view of PML rear differential cover installed PML rear differential cover installed Stock brackets work with PML cover
Click on image to view larger in a new tab or window.

Specifications

Drain, Fill and Level Check, and Optional Temperature Sensor Machining

Click on image to view larger.

Drain hole is on the bottom of the cover. A magnetic drain plug is included. A drain on the differential cover makes for easier servicing of the differential.

Fill hole is near at the top at the 1 o clock position. Level check hole is on the side at the 3 o clock position. The bottom of the level hole is at the same location as the OEM cover level check fill hole relative to the differential center line. This means that you check the fluid level the same way with the OEM cover as with the PML cover. Note that on the PML cover, the level check hole diameter is about 0.300 (3/8) inch.

For people who have an aftermarket gage monitoring the differential fluid temperature, this cover has a location that can be machined for the sending unit. The area about the 8 o clock position can be drilled and tapped for a 1/8 NPT hole for the sending unit. Optionally, PML can machine the hole and there is a custom machining charge. Select this option before clicking ADD TO CART. Verify the thread specification of your aftermarket temperature gage sending unit before ordering. Customer must select this option. By default, the 1/8 NPT is NOT machined.

Inside of PML Cover

Gasket on PML cover Click on image to view larger.

Included With PML Cover

PML includes new mounting bolts, fill plug, level check hole plug, and a magnetic drain plug with each cover. The washer for the magnetic drain plug can be reused.

Click on image to view larger.

Stock Cover

The covers for 2019 and newer and 2003 and newer are similar but NOT interchangeable.

This PML cover, part number 11176, replaces this 2019 and newer OEM cover. Here are pictures of the outside and inside of the OEM cover.

Comparing 2003 and newer and 2019 and newer covers:

Gasket

Gasket: customers have told us that Mopar Part Number 68454491AA is the gasket for this differential. If your truck has a difference gasket part number, please contact us.